Version 1.0 09/08/2017
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"√" means routine or regular check to be needed
Do not disassemble or shake the device gratuitously during check, and never unplug the
connectors, otherwise the system will not run or will enter into fault state and lead to component
failure or even damage to the main switching device such as IGBT module.
The different instruments may come to different measurement results when measuring. It is
recommended that the pointer voltmeter shall be used for measuring input voltage, the rectifier
voltmeter for output voltage, the clamp-on ammeter for input current and output current, and the
electric wattmeter for power.
9-2.Parts for regular replacement
To ensure the reliable operation of inverter, in addition to regular care and maintenance, some
internal mechanical wear parts (including cooling fan, filtering capacitor of main circuit for energy
storage and exchange, and printed circuit board) shall be regularly replaced. Use and replacement for
such parts shall follow the provisions of below table, also depend on the specific application
environment, load and current status of inverter.
Name of Parts
Standard life time
Cooling fan
1 to 3 years
Filter capacitor
4 to 5 years
Printed circuit
board (PCB)
5 to 8 years
9-3.Storage
The following actions must be taken if the inverter is not put into use immediately (temporary
or long-term storage) after purchasing:
※
It should be stored at a well-ventilated site without damp, dust or metal dust, and the ambient
temperature complies with the range stipulated by standard specification
※
If the time that the inverter is set aside exceeds one year, a charge test should be made so as to
resume the performance of the filtering capacitor of main circuit. When charging, the voltage
regulator can be used to slowly rise input voltage of the inverter until the rated input voltage,
the charging time is 1 to 2 hours or more. The above test shall be performed at least once a year.
※
Voltage withstand test can not be arbitrarily implemented, it will reduce the life of inverter.
Insulation test can be made with the 500-volt megger before using, the insulation resistance
shall not be less than 4MΩ.
9-4.Capacitor
9-4-1.Capacitor rebuilt
※
If the frequency inverter hasn’t been used for a long time, before using it please rebuilt the DC
bus capacitor according the instruction. The storage time is counted from delivery.
Time
Operation instruction
Less than 1 year
No need to recharge
Between 1~2
years
Before the first time to use, the frequency inverter must be recharged for
one hour
Between
2~3years
Use adjustable power to charge the frequency inverter:
--25% rated power 30 minutes,
-- 50% rated power 30minutes,
-- 75% rated power 30minutes,
--Last 100% rated power 30minutes,
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